111111200111 has 8 divisors (see below), whose sum is σ = 113907578400. Its totient is φ = 108318933760.

The previous prime is 111111200077. The next prime is 111111200113. The reversal of 111111200111 is 111002111111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111111200111 is a prime.

It is a super-3 number, since 3×111111200111³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111111200092 and 111111200101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111200113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973226 + ... + 1081383.

It is an arithmetic number, because the mean of its divisors is an integer number (14238447300).

Almost surely, 2^111111200111 is an apocalyptic number.

111111200111 is a deficient number, since it is larger than the sum of its proper divisors (2796378289).

111111200111 is a wasteful number, since it uses less digits than its factorization.

111111200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055969.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 111111200111 its reverse (111002111111), we get a palindrome (222113311222).

The spelling of 111111200111 in words is "one hundred eleven billion, one hundred eleven million, two hundred thousand, one hundred eleven".